Lithium battery diaphragm blade protection device

Abstract

The utility model discloses a lithium battery diaphragm blade protection device which comprises a machine body and a knife rest arranged on the machine body, a groove is formed in the knife rest, a plurality of width adjusting cushion blocks are placed in the groove, a protection structure is arranged among the width adjusting cushion blocks, and the protection structure comprises a base and an upper cover. A blade aligning piece is arranged between the base and the upper cover, and a fixing pin for limiting the position of the blade is installed on the end face, close to the upper cover, of the base. The width adjusting device is simple in structure, the blade is limited and protected through the base and the upper cover, direct contact between the width adjusting cushion block and the blade is avoided, the blade damage rate is effectively reduced, and the blade utilization rate is improved; and secondly, the production efficiency is indirectly improved by reducing the blade damage rate and reducing the time for tool changing and debugging.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, in particular to a lithium battery diaphragm blade protection device. Background Art

[0002] Lithium-ion battery separator is the main component of lithium-ion battery. Its main function is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. In the existing lithium-ion battery manufacturing process, the separator used is basically a large mother roll cut into the required width by a slitting machine to facilitate the subsequent preparation of battery cells.

[0003] Currently, there are two types of blades used for diaphragm slitting: circular blades and straight blades. When using a straight blade for slitting, if a traditional width adjustment pad is used to directly press the blade, the lower blade corner may be damaged due to uneven force, affecting the total number of meters cut and increasing the cost of blade use. Therefore, a lithium battery diaphragm blade protection device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery diaphragm blade protection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery diaphragm blade protection device, comprising a body and a knife holder arranged on the body, the knife holder is provided with a groove, and a plurality of width adjustment pads are placed in the groove, and a protection structure is provided between the plurality of width adjustment pads, the protection structure comprises a base and an upper cover, a blade is provided between the base and the upper cover, and a fixing pin for limiting the position of the blade is installed on the end face of the base adjacent to the upper cover.

[0006] As a further solution of the utility model: a tightening screw is installed on the end surface of the tool holder, and the end of the tightening screw penetrates into the groove and contacts the side wall of the width adjustment pad.

[0007] As a further solution of the utility model: a fixing hole is opened on the surface of the blade, and the inner diameter of the fixing hole is matched with the end of the fixing pin.

[0008] As a further solution of the utility model: a through hole is opened on the upper cover, and the inner diameter of the through hole is adapted to the end of the fixing pin.

[0009] As a further solution of the utility model: the number of the fixing pins, the fixing holes and the through holes is the same, and the positions of the fixing pins, the fixing holes and the through holes correspond one to one.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The base and the upper cover are used to limit and protect the blade to avoid direct contact between the width adjustment pad and the blade, which effectively reduces the blade damage rate and improves the blade utilization rate; secondly, the production efficiency is indirectly improved by reducing the blade damage rate and reducing the time for tool change and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the protection structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the tightening screw on the tool holder of the utility model;

[0015] In the figure: 1, machine body; 2, tool holder; 21, tightening screw; 3, width adjustment pad; 4, protection structure; 41, base; 411, fixing pin; 42, upper cover; 422, through hole; 5, blade; 51, fixing hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 In an embodiment of the utility model, a lithium battery diaphragm blade protection device includes a body 1 and a blade holder 2 arranged on the body 1, a groove is opened on the blade holder 2, and a plurality of width adjustment pads 3 are placed in the groove, and a protection structure 4 is provided between the plurality of width adjustment pads 3, the protection structure 4 includes a base 41 and an upper cover 42, the base 41 and the upper cover 42 are magnetically connected, a blade 5 is provided between the base 41 and the upper cover 42, and a fixing pin 411 for limiting the position of the blade 5 is installed on the end surface of the base 41 adjacent to the upper cover 42.

[0018] Specifically, the fixing pin 411 on the base 41 can correspond to the fixing hole 51 on the blade 5. After the blade 5 is fixed to the base 41, the upper cover 42 is placed on the upper part thereof. A through hole 422 is provided on the upper cover 42, and the through hole 422 can match and coincide with the blade fixing pin 411. In addition, the base 41 and the upper cover 42 are magnetic. After the blade 5 is placed between the base 41 and the upper cover 42, they can be naturally adsorbed together to fix the blade 5, thereby avoiding uneven force on the blade 5 which may cause damage to the lower blade corner.

[0019] See also Figure 1In one embodiment, in order to fix the multiple width adjustment pads 3 in the groove, in this embodiment, preferably, a tightening screw 21 is installed on the end surface of the tool holder 2, and the end of the tightening screw 21 penetrates into the groove and contacts the side wall of the width adjustment pad 3. According to the position of the blade 5, the width adjustment pads 3 of corresponding size and quantity are placed inside the groove. After the width adjustment pads 3 are placed, the tightening screw 21 is twisted to enter the groove of the tool holder 2 to hold the width adjustment pad 3.

[0020] See also Figure 2 In one embodiment, in order to fix the position of the blade 5, in this embodiment, preferably, a fixing hole 51 is opened on the surface of the blade 5, and the inner diameter of the fixing hole 51 is adapted to the end of the fixing pin 411. Further, the end of the fixing pin 411 is passed through the fixing hole 51 on the blade 5, so that the blade 5 can be limited in the horizontal direction to prevent the blade 5 from being offset during use.

[0021] See also Figure 2 In one embodiment, in this embodiment, preferably, a through hole 422 is opened on the upper cover 42, and the inner diameter of the through hole 422 is adapted to the end of the fixing pin 411. Further, the end of the fixing pin 411 passes through the fixing hole 51 and enters the interior of the through hole 422, so that the relative position of the base 41 and the upper cover 42 is defined, and the number of the fixing pins 411, the fixing holes 51 and the through holes 422 is the same, and the number of the fixing pins 411 is not limited. In this embodiment, preferably, the number of the fixing pins 411 is two, and the positions of the fixing pins 411, the fixing holes 51 and the through holes 422 correspond one to one, so that the base 41, the upper cover 42 and the blade 5 can be stably connected together.

[0022] The working principle and use process of the utility model are as follows: first, the width adjustment pad 3 is placed into the groove on the tool holder 2. The width adjustment pad 3 can be selected in different sizes according to the requirements of different slitting widths. The blade protection device 4 is placed between the width adjustment pads 3. The blade protection device 4 is fixed by the blade protection device base 41 and the blade protection device upper cover 42. After adjustment, the tightening screw 21 is twisted to enter the groove of the tool holder 2 to support the width adjustment pad 3 to fix the width adjustment pad 3 and the blade protection device 4.

[0023] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0024] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery diaphragm blade protection device, comprising a body (1) and a blade holder (2) arranged on the body (1), characterized in that: The knife holder (2) is provided with a groove, and a plurality of width adjustment pads (3) are placed in the groove, and a protective structure (4) is provided between the plurality of width adjustment pads (3), the protective structure (4) comprising a base (41) and an upper cover (42), a blade (5) is provided between the base (41) and the upper cover (42), and a fixing pin (411) for limiting the position of the blade (5) is installed on the end surface of the base (41) adjacent to the upper cover (42).

2. The lithium battery diaphragm blade protection device according to claim 1, characterized in that: A tightening screw (21) is installed on the end surface of the tool holder (2), and the end of the tightening screw (21) penetrates into the groove and contacts the side wall of the width adjustment pad (3).

3. The lithium battery diaphragm blade protection device according to claim 1, characterized in that: A fixing hole (51) is provided on the surface of the blade (5), and the inner diameter of the fixing hole (51) is adapted to the end of the fixing pin (411).

4. The lithium battery diaphragm blade protection device according to claim 3, characterized in that: The upper cover (42) is provided with a through hole (422), and the inner diameter of the through hole (422) is adapted to the end of the fixing pin (411).

5. The lithium battery diaphragm blade protection device according to claim 4, characterized in that: The number of the fixing pins (411), the fixing holes (51) and the through holes (422) is the same, and the positions of the fixing pins (411), the fixing holes (51) and the through holes (422) correspond one to one.

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